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<table width="100%" summary="page for WorldPhones"><tr><td>WorldPhones</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>The World's Telephones</h2>

<h3>Description</h3>

<p>The number of telephones in various regions of the world (in
thousands).
</p>


<h3>Usage</h3>

<pre>WorldPhones</pre>


<h3>Format</h3>

<p>A matrix with 7 rows and 8 columns.  The columns of the matrix give
the figures for a given region, and the rows the figures for a year.
</p>
<p>The regions are: North America, Europe, Asia, South America, Oceania,
Africa, Central America.
</p>
<p>The years are: 1951, 1956, 1957, 1958, 1959, 1960, 1961.
</p>


<h3>Source</h3>

<p>AT&amp;T (1961) <em>The World's Telephones</em>.
</p>


<h3>References</h3>

<p>McNeil, D. R. (1977)
<em>Interactive Data Analysis</em>.
New York: Wiley.
</p>


<h3>Examples</h3>

<pre>
require(graphics)
matplot(rownames(WorldPhones), WorldPhones, type = "b", log = "y",
        xlab = "Year", ylab = "Number of telephones (1000's)")
legend(1951.5, 80000, colnames(WorldPhones), col = 1:6, lty = 1:5,
       pch = rep(21, 7))
title(main = "World phones data: log scale for response")
</pre>


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